Finding the Fourth Proportional to 644,153.26, 888,917.74 and 357,668.41
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Solution
The fourth proportional to 644,153.26, 888,917.74 and 357,668.41 is: 493,574.77
Step by Step Solution
- Step 1: Write the proportion equation
644,153.26 : 888,917.74 = 357,668.41 : x - Step 2: Convert to fraction form
644,153.26/888,917.74 = 357,668.41/x - Step 3: Cross multiply
644,153.26x = 888,917.74 × 357,668.41 - Step 4: Simplify right side
644,153.26x = 317,937,794,686.59 - Step 5: Solve for x
x = 317,937,794,686.59/644,153.26 - Step 6: Final answer
x = 493,574.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.